<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容"
                    v-model="queryInfo.query"
                    clearable
                    @clear="getGoodsList"
                    @change="getGoodsList">
            <el-button slot="append"
                       icon="el-icon-search"
                       @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary"
                     @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data='goodslist'
                border
                stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称"
                         prop="goods_name"></el-table-column>
        <el-table-column label="商品价格（元）"
                         prop="goods_price"
                         width="125px"></el-table-column>
        <el-table-column label="商品重量"
                         prop="goods_weight"
                         width="125px"></el-table-column>
        <el-table-column label="创建时间"
                         prop="add_time"
                         width="155px">
          <template slot-scope="scope">
            {{scope.row.add_time|dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作"
                         width="125px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-tooltip effect="dark"
                        content="修改商品"
                        placement="top"
                        :enterable="false">
              <el-button type="primary"
                         icon="el-icon-edit"
                         size="mini"
                         @click="showEditDialog(scope.row.goods_id)"></el-button>
            </el-tooltip>
            <!-- 删除按钮 -->
            <el-tooltip effect="dark"
                        content="删除商品"
                        placement="top"
                        :enterable="false">
              <el-button type="danger"
                         icon="el-icon-delete"
                         size="mini"
                         @click="removeUserById(scope.row.goods_id)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <el-pagination @size-change="handleSizeChange"
                     @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum"
                     :page-sizes="[10, 20, 30, 40, 50]"
                     :page-size="queryInfo.pagesize"
                     layout="total, sizes, prev, pager, next, jumper"
                     :total="total">
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 获取商品列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 10
      },
      // 商品数据
      goodslist: [],
      total: 0
    }
  },
  created () {
    this.getGoodsList()
  },
  methods: {
    // 获取商品数据
    async getGoodsList () {
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败！')
      }
      this.$message.success('获取商品列表成功！')
      // console.log(res.data)
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange (newSize) {
      // console.log(newSize)\
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 监听page改变的事件
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 根据Id删除对应的用户信息
    async removeUserById (id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }

      const { data: res } = await this.$http.delete('goods/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败！')
      }

      this.$message.success('删除用户成功！')
      this.getGoodsList()
    },
    // 跳转至添加商品页面
    goAddpage () {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>
</style>
